Empla



E. L. WIEGAND.

EMPLACING APPARATUS. I APPLICATION FILED Nov. II. I92o.

Papen'ted Aug. 9, 1921-.

3 SHEES-SHEET l.

i I I /y'zffffzzdf' .5. L. WIEGAND.l EMPLACING APPARATUS.

APPLICATION FlLxED NOV. Il, 1920.

Patented Aug. 9, 1921. l 3 SHEETS-SHEET 2- E. L. WIEGAND.. ,EMPLACINGAPPARATUS.

AEPLICATION FILED 'NOV. 1l, 1920. 1,387,029, Patented Aug. 9, 1921.

3 SHEETS-SHEET 3.

EDWIN L WIEGAND, or rrr'rsunen, PENNSYLVANIA.

Mmmm BElssuED To 1A-ZZ whom t may concern j .Be it known that I, EDWINL. WIEGAND, a citizen of theUnited States; residing at Pittsburgh, inthe county of Allegheny and State of Pennsylvania, have invented acertain new and useful Improvement in Emplacing Apparatus, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying draw i ings.

This invention relates to emplacing apparatus and more especially to ahydraulically actuated apparatus of this character. Among its objectsare the production of a highly reliable and conveniently operatedhydraulic means for embedding an element in a base or body ofimpressionable material (as, for example, the conducting mem-- ber orresistor element of an electric heating device, in the supporting andinsulat-7 ing matrix), the same being accomplished with a degree of easeand precision that assures perfection and absolute uniformity ofproduct; the production of apparatus that will facilitate and chea-penthe manufacture of electric heating devices or other articles to themaking of which my invention is applicable, permitting the employment ofinexperienced Vand unskilled labor for doing what only experts have beenable to satisfactorily accomplish heretofore; the inclusion of means inan apparatus of the aforesaid character that will prevent the machinesbeing operated except when the element that is to be emplaced is inproper relation to a base arranged to receive it; and the provision of amain pressure fluid actuated mechanism vfor effecting the emplacement ofthe element in the base, and.

auxiliary pressure fluid actuated mechanism for. causing vthe removal ofthe element from the carrier when the former is properly emplaced.

A further' object is the provision of an element form or carrierincorporating stripping mechanism that Will automatically act to removethe element from the supporting pins of the form when the form orcarrier is subjected to pressure.

The vforegoing objects, and others which will become apparent as thisdescription proceeds, are attained in the embodiments illustrated inthey drawings accompanying and forming a part hereof, and wherein Figurel is a perspective view of a hydraulic emplacing machine incorporatingSpecification of Letters Patent.

GFFICE.

Patented-Auge, 1921,

Application filed November 11, 1,920. Serial NQ. 423,470.

my invention; Fig. 2 is a somewhat enlarged central vertical section,from front to rear,'

through the upper part of said machine; Fig. 3 isl a fragmentary sideelevation of the machine in the region of the movable platen, and itincludes a diagram4 ofthe electric circuit through which the means iscontrolled for preventing the machines be'- ing operated except when thework is -pro'perly positioned therein; Fig.- 4 is a sectional detail onthe line 4--4 of Fig. 2; Fig. 5

shows, in perspective and in separated con- I dition, the parts whereofthe element carrier or form -irst to bev described is comprised; Fig. 6is a perspective view of another form of hydraulic machlne incorpofrating my improvements; Fig. 7 is a perspective view, with the partseparated, ofA

a modification of the form or element carrier, the view including thereceiving element or base; Fig. 8 is a sectional detail through the formand base, the plane of section beino` Fig. 7; and Fig. 9 (Sheet l) is adetail of a work locating stop.

I takeas a basis for my improvements a standard type of'hydraulic presscompris-` indicated by the line 8--8 of ing a stationary platen 1 thatis supported,

by standards 2 a suitable distance above the floor, and a'. cylindercasting 3 -is sustained a proper .elevation above .the stationary platenyby posts 4. A movable platen 5 1s guided in the usual manner upon theposts 4 and is adapted to be retracted by pullback springs (not shown)that are housed within the' tubular casings 7 which rise from theopposite sides of the cylinder casting 3. The movable platen 5 iscarried by a ram 8 which operates within the cylinder 10 of the casting3, a -packing gland 11 closing the joint between the ram and cylinderwall.

The press may be controlled by a'ny suitable and well 'known valvevarran ement involving an operating lever 15. k.n view of the fact thatsuch valve arrangements and their methods of operation are so familiar,

to those skilled in theart, a detailed description and showing of this.feature 1s deemed unnecessary in this connection, and the action 'of thecontrol will be readily understood from .the description ofthe same asit formsa part of the explanation here'- inafter given'of the operationof the machine as a whole,

To the under face of the movable platen 5 I secure, as by means ofscrews 20, a form holder 21, from the rear end ofl which depends a lug22. `Laterally spaced parallel ribs 23 areincorporatediii the formholder and to these ribs are applied rails 24. The base-of the formholder serves, in the pres- Yent arrangement, t'o close the outer end ofan auxiliarycylinder 25 that is 'formed within the movable platen andram, and

this cylinder contains .,a, piston 26, the rod 27 whereof projectsthrough an aperture 28 l in the baseof the form holder.

rllhe element carrier or form designated I' generally by the referencenumeral 29, is composed of a rectangular body 30 which has a body 30andv through apertures 34 in a facel plate that is secured byy suitablemeans to the underneath side of the body 30. rlFhe lower ends of thepins 33 arescrewed into a stripper 37 that is reciprocable along theelement carrying pins 38 that depend from the faceplate 35. Springssurround the pins 33 and are confined between the yoke` or spider 32 andthe face plate 35, occupy ing, as they do, the. holes 30a; and thesesprings tend to elevate the yoke or spider and retract the stripper`37so that the ends of pins 38 protrude beyond the stripper sufficiently tohave wound upon them andn support the yheating or resistor element E. Aplate 41,having a central aperture 42, is applied .to the upper side ofthe body portion 3 and serves to close the opening 31. lt

Vwill be observed that the sides of the body portion 30 are rabbetedalong their upper edges so as to provide grooves when the plate 41 isapplied to the body portion, it being noted, by reference to Fig. 4,that said plate is of the same width as the body portion. A handle 43 isapplied to one end of the body portion 30 and an adjustable stop 44 tothe other. i

From an "inspection of Fig. 3 it will be seen that a contact member 45is carried by, andis insulated from, thelug 22 of the form holder 21.This member is in a Cposition to .be engaged by the adjustable stop 44when the form occupies the holder and is lproperl situated therein. Abracket 50 depends rom the forward right hand corner of the cylindercasting 3 and a latch 51 is pivoted at 52 to the bracket, andthe same isretained by a spring 53 in a forward position against a stop 54. ln suchposition the nosel 55 of the latch is projected beneath a pin 56 on thevalve operating lever l5. The latch 5l constitutes an armature for anelectro-magnet 58 that is sustained in operative relation to thearmature by the aforesaid bracket 50.

rlhe electro-magnet 58, with the previously mentioned contact member 45,is in one branch 59 of an electriccirmemes,

will vbe closed and the electro-magnet .58'

energized to attract the latch 51 and unlock the valve actuating lever15.

A bolster 65 is mounted upon the station- Aary platen land the sameisequipped with suitable gages and retaining means 66 and 67,respectively, vfor properly positioning and holding the receivingelement or base B. For the gages 66, l prefer to employ the style ofroller stop illustrated indetail in Fig. 9 (Sheet 1). This stopdesignated generally by the numeral 66, is composed of a stud 68,threaded into the bolster 65, and locked in a properly adjusted positionbyl a nut 68a. A screw 68b is threaded for adjustment through" the headof the/stud; is held in adjustment by lock-nuts 68C; and carries aroller 68d for engagement with the work. This anti-friction style ofgage or stop possesses the obvious advantage over the rigid type in thatany irregularities on the work are not liable to catch on the stop anddeceive the operator into supposing 'the work lis properly positionedwithin the machine.

when as a matter of fact it is not. The base B which, in thepresentcase, is the face plate of electric sad iron, contains a fillerof plastic or impressionable material within which the element E is tobe embedded.

A port 69 leads in through the vfront of the movableV platen 5 to theauxiliary cylinder 25, and a pipe 70 communicatively connects the portwith a flexible tube 71 which leads from a source of pressure fluidsupply (not shown). rllhe pipe 70 includes a three way valve 72, theoperating handle 73 whereof 'is adapted'to be engaged and moved by'astop 74 that is carried by the cylinder casting 3, when the movableplaten 5 is elevated, and which is adapted to engage and be moved by anadjustable stop 75 that rises from the stationary platen 1, when themovable platen is depressed.v rllhe outlet side of the valve 72 is shownas having an eX- haust pipe 7()a connected to it.

j In the use 'of the present machine, the operator after placing base Bon the bolster 65, takes the form whereon the element E has beenpreviously wound and inserts it within the guides 24 of the form holderuntil the stop 44 engages the contact member 45, re-

sulting in the energization of the magnetl 58 and the release of thelatch 51, as hereinbefore explained. The operator now depresses thelever 15 which closes the usual by-pass valve and directs the hydraulicpressure fluid through a pipe 76 into cylinder 10. As the hydraulicvpressure fluid accumulates within the cylinder it depresses the ram 8and lowers the movable platen 5, with the form supported thereby, untilthe element E is embedded within the hase B1. The movement of the ramthus arrested, hydraulic pressure builds up within the cylinder and pipe76 until, according to thecommon and well knownoperation of the valvemechanism of hydraulic presses, the check valve of the pump is .liftedand retained off its seat, rendering the pump ineffective. In .themeantime, as the movable platen `descends,

the operating handle 73 v'of the valve 72 enl gages the stop 75 andpositions the valve to admit pressure fluid to the auxiliary cylinder25. This results in adepression of the piston 26 and a` projection ofits rod 27 through the aperture 42 of the form and the engagement of therod with the yoke or spider 32. Now, when lthe operator returns thevalve actuating lever 15 to its upper or normal position, hethereby-opens an escape for the hydraulic pressure fluid that has beenconfined within the cylinder 10, allowing the pull-back springs that areinclosed within the casings 7 to retract .the movable platen 5.

This will be readily understood by those familiar with the voperationofA hydraulic presses. During the initial upward move! ment of theplaten 5 and, form 29 the strip-- per 37 is held down by the rod l27 of.the

vpiston 26, thus retaining the element E with. in the base B whileretracting the element supporting pins 38 into the pin bores of thestripper. The stripper and its actuating mechanism will retain theirdepressed positions until the operating handle 73 'of the valv e.7 2engages the stop 74, when the valve v will be positioned to exhaust theauxiliary cylinderl 25, allowing springs 40 to return the stripper toits original position, and permittin a spring 26a to retract the piston26.

In iu. 6, my invention is shown inco-rporated 1n another form ofhydraulic press wherein 80 is a base from the corners o-f which riseposts 82 that support a stationary platen 83'at their'upper ends.A-cylinder 84 is mounted upon the base 80 andthe ram 85, which operateswithin this cylinder, carries a movable platen 86.

YAn operating leve-r 90 is pivo-ted at 92 to the side. of theJstationary platen 83 in convenient reach of the operator and it isadapted to be held in its elevated position by a' latch 93 having a gripportion 94 by through a link 102, with the rear end of a -rocker arm 103that is pivoted at'104 to a stationary part ofthe machine, the forwardendyof the arm 103 engaging the stem 105 of the lusual by-pass valve.

The form or element carrier which I have shown as used with this styleof press is illustrated in detail in Figs. 7 and'8, and the samecomprises a body 110 having a recess 111 within which is housed ayoke-or lspider 112 that is connected, through pins 113, with a stripper114, the pins 113 operating through bores in the face plate 115 that isapplied to the underneath side of the body 110, and from which dependsthe element supporting pins 116. The pins 113 are shown as havingsleeves 117 applied to them for the fpurpose lof properly spacing thestripper from the spider or yoke 112. Comparatively heavy compresslonsprings 120 are confined between the arms of the spider 112 .and theopposed walls of the recess 111 and tend to depress the spider. 122 is ascrew that is threaded through the spider 112 and bears upon the innerside of the face plate 115, and access to the head of this screw may behad through an opening 123 in the body 110. A spiral spring 125 has one`of its ends attached to the screw 1.22 and its 126, to the spider 112.The spring tends by reasonvof its direction of winding, to unscrew thescrew 122. In Fig. 8 the entering element is designated E', and in Fig.7 as well as in Fig. 8 the base is designated B.

In preparing the present form illustrated in detail in Figs. 7 and 8,for the press or emplacing machine, a socket wrench of the character ofthat designated 130 in Fig. 7,

is inserted through the opening 123 of the body 110, applied to the headof screw 122,

and .turned 1n the direction to cause the screw to retract the spider112 and with it the stripper 114, until the latter is in firm Contactwith the face plate 115. This turning of the screw 122 is in oppositionto the spiral spring125, but said spring is not of sulicient strength toturn the screw in the opposite direction when the screw is in engagementwith the face plate 115 because of the friction imposed upon the threadso-f the screw by the comparatively heavy compression springs 120 whichare constantly tending to depress the spider. With the screw L22 thusrestrained against turning in a direction toperlhit the spider andstripper to be depressed b-y the springs 120, the element E may be woundupon the pins 116 where they protrude beyond the stripper. After thelelement is so placed upon the form, the wrench 130 is'applied to screw122 and the screw is turned in a backward direction sufficiently toslightly separate the strip-per 114 fromthe face plate 115. In thiscondition,

' upon the base B and the whole is set upon the movable platen 86 of'thepress, and retained in proper position by suitable locating means(not shown). The latch 93 is operated to withdraw its pin 96 from theretain-i4 ing'hole in the stationary platen 83, thus unlocking lever 90and allowing it to be lowered. This results in the rear end of the leverrising,allowing the weight 101 to actuate its lever99 and, through thelink 102, to rock the arm 103 in a direction to close the by-pass valve105, whereupon the hydraulic pressure. fluid is forced through the pipe131 to the cylinder 84, all of which will be readily understood bythosefamiliar with this class of machines. The ram 85 bein thus actuated itmoves platen l86 upwardly until the form and base are compressed betweenthe'platens. rllhis results in the en- -tering element being, embeddedwithin the receiving element, and the ram. l85 being brought to a stop.As the pressure thereafter builds .up within the cylinder, the safetyvalve 132 operates to render the pump ineffective, as in the formerexample.

When the parts are compressed betweenthe movable and stationary platens,the strip-per 114 is pressed back against theface plate 115, elevatingthe spider 112 through the intervention of pins 113 and spacers 117 andagainstthe tension of the springs 120 until the end of thevscrewf122 islifted out of Contact with they face plate 115. This v relievesexcessive friction on the threads of the screw and allows the spiralspring 125M to turn the screw in a direction to withdr-aw it. N owwhenthe movableplaten 86 is retracted, the sprlngs 120 expand and lift thebody 110, and with it the face plate 115 and prins .116 withdrawing thepins 116 from the base and leaving the element E embedded therein. Thecylinder is exhausted of hydraulic pressure fluid by the return ofhandle 90 to normal position, allowing push back springs 150 and theweight of the movable platen and ram, with the form and base,

to return the parts to their normal positions.`

The push-back springs 150 are interposed between the stationary platen83 and shoulders 151 on rods "152 that are threaded for adjustmentwithin ears1'53 on the sides of the movable platen 86. Lock-nuts 154serve to hold the rods 152 in proper adjustment I may explain that thetwo types of forms herein illustrated are interchangeable between thetwo machines o'r presses, the one being more desirable in certainclasses of work than the other as, for instance, the

form illustrated in Figs. 7 and 8,'has beenfound very satisfactory forheavy work.

Also, it will be understood that the form` holder, and thebase-positioning-and-retaining means that are shown in connection withieznoae the type of press illustrated in F i'g.l 1 may be utilized inconnection with the 'press illustrated in Fig. 6. 1t will be noted thatthe form shown in Figs. 7 and 8 is provided With grooves 110a on itsopposite sides so body 110. It is somewhat to be preferred v that theform be carried by one of the press members and withdrawn from the workvwhen such members are separated, rather than in the manner lillustratedin Fig. 6.

Having thus described my invention what 4l claim is:

l. 1n a machine of the character set forth,

the combination of two press members, one of which'is movabletoward andfrom the other, hydraulic means for.- actuatmg the n movable memberfamovable control member for governing the hydraulic means,electromagnetic means for locking 'the control member in inoperativeposition, an electric circuit including an electro-magnetic means,-

and means rendered effective by the placement of work between the pressmembers for closing the circuit thereby to energize the electro-magneticmeans-and unlock the aforesaid control member.

2. 1n a machine of the character set forth, the combination of' -twopress members, one

`of which is movable toward and .from the other, hydraulic means foractuating: the movable member, a movable-controlymember forgoverning thehydraulic means,.a latch for locking the control member in inthecombination of two press members, onel of which is movabletoward andfrom the other, hydraulic means for actuating the movable member, amovable control member for governing the hydraulic means, a latchoperative position, electro-magnetic means v for locking the controlmember in inoper-l ative position, and means rendered' effective by theplacemvent'of work between the press members for unlatching the latch.

4. 1n a machine of the character set forth, i

the combination of a pair of members con-` stituting respectively 4asupport `for a receiving element and a holder for an entering element,one of said members being movable toward and from the other, mechanismfor effecting the removal of `the .entering Velement from'the holderwhen the entering element has been emplaced within the receivingelement, and pressure fluid means lfor actuating said mechanim.

5. In a machine of the character set forth the combination of a pair ofelements constituting respectively a support for a receiving element anda holder for entering element, one of said members being movable towardand from the other, pressure fluid mechanism for effecting theseparation of the entering element and the holder after the enteringelement has beenemplaced Within the receiving element, and meansoperated by reason of the movement' ofthe movable member for deliveringpressure liuid to said mechanism.

6. In a machine of t-he character set forth, the combination of a pairof members constituting respectively a'support for a receiving elementand a holder for an entering element, one of said members being movabletoward and from. the other, mechanism for effecting the removal of theentering element from the holder When the entering element has beenemplaced Within the receiving element, and means for moving the movablemember and for operating said mechanism in the order described.

7. In a machine of the character set forth, the combination of astationary platen, and a movable platen, hydraulic means for moving themovable platen toward the stationary platen, a carrier for an enteringelement Which, with a receiving element, are adapted to be placedbetween said platens, and means for effecting the removal of theentering element from -the carrier When said entering element has beenemplaced Within the receiving element.

8. In a machine of the character set forth,

Y the combination of a stationary platen, and

a movable platen, the hydraulic means fo-r moving the movable platentoward the stationary platen, a carrier for an entering element which,witha receiving element, are adapted to be placed between said platens,and means incorporated Within the carrier for effecting the removal ofthe entering element from thecarrier when said entering element has beenemplaced Within the receiving element.

9. In a. machine of the character set forth, the combination of astationary platen and a movable platen, hydraulic means for moving themovable platen toward the stationary platen, a form holder sustainedA bythe movable platen, a form equipped With-means for carrying an enteringelement, and adapted to be placed in said holder and a stripper foreffecting the removal of the entering element from said means When saidentering elementrhas been `,emplaced `Within a receiving elementsupported by a stationary platen.

10. In a machine of the character set forth, the combination of astationary platen, a movableplaten, hydraulic means for moving themovable plate-n toward the stationarypla-ten a form holder sustained byonel of the platens, means on the other platen for positioning areceiving element, a form adapted to be placed Within Lthe holder andequipped to sup-port an entering element, and lmeans for`effecting theremoval of 'theentering element from the 'form When" emplaced Within thereceiving element.

11. In af'machine of the character set forth, the lcombination. of astation platen, a movable platen, hydraulic means for moving the movableplaten toward the stationary platen, a form .holder sustained by thesie;I

movable platen, means on the stationary effecting the removal of theentering element from the form vvhen emplacedwithin the" receivingelement, and means carried by the movable platen for actuating saidremoving means.

12. In Aa machine of vthe character set forth, the combination of astationary platen having means` for 'positioning a receiving elementthereon, a movable platen, hydraulic means for moving themovable platento- Ward the 'stationary'y platen, a holder sustained by the movableplaten, a form adapted to be placed Within the holder and equipped tosupport an4 entering element, means i11- corporated inthe form foreffecting the removal of the entering element from the form when saidentering element is emplaced Within the receiving element, pressure iuidactuated means incorporated in the movable platen for 'operating theremoving means, and means for directing pressure Huid to said pressurefluid actuated means.

13."In' a machine of the character 'set forth, the combination of astationary platen having means for positioning a receiving elementthereon, a movable platen, .hydraulic means for moving the movableplaten to- Ward the stationary platen, a holder susj tained by themovable platen, a form adapted to be placed Within the holder andequipped tosupport an entering element, means incorporated in the formfor effecting the removal of an entering element from the form when theentering element is emplaced Within the receiving element, pressurefluid actuv platen; a form equipped to Gerry an entering ing element,said Ineens being automatically p element and which with a, receivingelement, actuated'when the form and receiving eleare adapted to beplaced between said ment are compressed between the platens. w

platens7 and means incorporated in the form lIn testimony whereofhereunto aliix my forl ei'ecting the removal of the entering signature.element from the form When said entering element has been emplacedWithin the reoeiv- EDWIN L. WIEGAND;

